CN113700034A - Underground prefabricated assembly type structure and installation method thereof - Google Patents
Underground prefabricated assembly type structure and installation method thereof Download PDFInfo
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- CN113700034A CN113700034A CN202110549376.8A CN202110549376A CN113700034A CN 113700034 A CN113700034 A CN 113700034A CN 202110549376 A CN202110549376 A CN 202110549376A CN 113700034 A CN113700034 A CN 113700034A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8623—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers and at least one form leaf being monolithic
- E04B2/8629—Walls made by casting, pouring, or tamping in situ made in permanent forms with spacers and at least one form leaf being monolithic with both form leaves and spacers being monolithic
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- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention provides an underground prefabricated assembled structure and an installation method thereof, and solves the problems that in the existing large-span project, due to the fact that prefabricated components are overlarge in size and overlarge in weight, hoisting is difficult, and construction difficulty and construction efficiency cannot be considered at the same time by combining prefabricated double-sided superposed shear walls with inverted T-shaped plates and adopting a prefabricated assembly type construction technology of UHPC connection. Finally, a novel assembly type structural system of the inverted T-shaped plate combined double-sided superposed shear wall tool with good construction environment, low construction difficulty and high construction efficiency is formed.
Description
Technical Field
The invention relates to an underground prefabricated assembly type structure and an installation method thereof.
Background
At present, prefabricated assembled structures are generally popularized in various parts of China, but are slowly popularized in large public municipal buildings, especially urban underground space structures. The existing prefabricated construction technology has more limitations due to the relatively large span and height of the existing prefabricated plate or prefabricated wall when facing the special structures such as the large-scale pool of the large-scale underground sewage treatment plant and the like:
1. when the height of the prefabricated wall body is too high and the span is too large, the weight of the prefabricated part of the prefabricated wall body often reaches dozens of tons, great difficulty is generated in hoisting in the prior art, construction difficulty is high, construction efficiency is reduced, and structural performance cannot be guaranteed;
2. the prefabricated roof panel that adopts the large-span has excessive heavier, difficult hoist and mount, the unable scheduling problem of guaranteeing of efficiency equally, has the condition that the heavy truck went after the roof panel installation is accomplished simultaneously, and its bearing load limit value can't be guaranteed, produces the safety problem easily.
3. Underground space is waterproof and dampproofing more important, and the technique of present prefabricated assembled structure this respect is relatively weak.
4. Due to the influence of the time-space effect of foundation pit excavation, the underground prefabricated structure requires faster construction, and the overlong exposure time of the foundation pit is avoided.
In a word, when an existing construction system of a prefabricated assembly structure faces an engineering project with large span and height, the problems that a prefabricated part is difficult to hoist, construction speed is low, structural performance cannot be guaranteed, a construction space environment is severe, waterproof and moistureproof requirements cannot be met, construction difficulty and construction efficiency cannot be considered simultaneously and the like need to be solved by the novel construction system.
Disclosure of Invention
The invention aims to provide an underground prefabricated structure and an installation method thereof.
To solve the above problems, the present invention provides an underground prefabricated structure, comprising:
a double-sided laminated shear wall comprising: the prefabricated wall comprises two prefabricated walls which are arranged in parallel at intervals relatively, wherein a steel bar net piece is arranged in each prefabricated wall; the steel bar trusses are arranged between the two prefabricated walls and are respectively connected with the steel bar meshes in the two prefabricated walls;
prefabricated board of falling T includes: the double-sided superposed shear wall comprises a roof panel and a hidden beam arranged on the top surface of the roof panel, wherein the top of the double-sided superposed shear wall is connected with a prefabricated inverted T-shaped plate through a UHPC (ultra high performance concrete) wet joint.
Further, in the above-mentioned underground prefabrication assembled structure, the bottom of the double-sided superposed shear wall is connected with the bottom plate.
Furthermore, in the above-mentioned prefabricated assembled structure in underground, the vertical reinforcing bar has been run through in every prefabricated wall body, the extension of vertical reinforcing bar extends outside every prefabricated wall body, extension and the pre-buried vertical reinforcing bar overlap joint of bottom plate.
Further, in the above underground prefabricated structure, the length of the extension part is 10 times the diameter of the reinforcement of the extension part.
Further, in the underground prefabricated structure, the length of the extension part is 1.2 times of the preset anti-seismic anchoring length.
Further, in the above-mentioned prefabricated assembled structure in underground, the extension is with the cross welding of the pre-buried vertical reinforcing bar interval of bottom plate.
Further, in the underground prefabricated structure, the thickness of the steel bar protection layer of the prefabricated inverted T-shaped plate is 3.5 cm.
According to another aspect of the present invention, there is also provided a method for installing an underground prefabricated structure, which is characterized by using any one of the above-mentioned underground prefabricated structures, the method including:
step S1, after the double-faced superposed shear wall is hoisted to the designated position on the built bottom plate, the double-faced superposed shear wall is fixed by a steel pipe inclined strut;
step S2, using UHPC to cast the wall and floor nodes;
step S3, pouring concrete in the cavity of the double-sided superposed shear wall;
step S4, hoisting the prefabricated inverted T-shaped plate to the top of the double-faced superposed shear wall;
step S5, the top of the double-faced superposed shear wall is connected with the prefabricated inverted T-shaped plate through a UHPC wet joint;
and repeating the steps until all the double-sided superposed shear walls and the prefabricated inverted T-shaped plates in the single span area are arranged.
Compared with the prior art, the invention has the following advantages:
1. the invention prefabricates beams, walls and plates in advance, and connects the structures of prefabricated wall plates and prefabricated floor plates (the inverted T-shaped plate comprises hidden beams) from bottom to top to form a set of brand new structure system.
2. All the wall plate structures are prefabricated by adopting double-sided superposed shear walls, so that the problem of overweight components caused by overhigh height and overlarge span of prefabricated components is solved, the weight of the components is greatly reduced, the transportation and hoisting construction are convenient, and meanwhile, the upper wall body and the lower wall body are connected into a whole, so that the joint surface is larger and the connection is more reliable;
3. the prefabricated wall plate of the prefabricated double-sided superposed wall is also used as a concrete pouring template, and the prefabricated inverted T-shaped plate is also used as a concrete pouring template of the floor system, so that the construction period and cost of a large number of bent frames and templates are saved, the construction speed is high, and the project is more efficient and economical.
4. All floor slabs adopt prefabricated inverted T-shaped plates, so that the problems of overweight components, insufficient load bearing capacity and the like when the plate span is too large are solved, the construction and hoisting efficiency is greatly improved, the structural performance is improved, and the potential safety hazard of the structure is reduced;
5. the roof of the underground sewage treatment plant is usually provided with thicker covering soil, equipment transportation vehicle passing roads and heavy equipment foundations, and needs to bear larger load, and the load can reach 40kn/m after the prefabricated inverted T-shaped plate is combined with the superposed layer for construction2,The bearing aspect can meet the requirement of top plate load;
6. the structural beam, the wall and the plate are integrally prefabricated, and joints of the joints are connected by UHPC post-pouring, so that a set of assembled structural system with stable quality, safety, convenient construction and high efficiency is finally formed.
7. The key nodes are poured by UHPC, and the UHPC material has good durability and can adapt to the corrosive environment of a sewage treatment plant, so that the key nodes are more durable and reliable.
Drawings
FIG. 1 is a schematic view of a double-sided laminated shear wall according to one embodiment of the present invention;
FIG. 2 is a schematic view of a prefabricated inverted T panel of one embodiment of the present invention;
FIG. 3 is a schematic view of the installation of a double-sided overlapping shear wall according to one embodiment of the present invention;
FIG. 4 is a schematic illustration of concrete placement of a double-sided composite shear wall according to an embodiment of the present invention;
fig. 5 is a schematic view of an underground prefabricated structure according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 5, the present invention provides an underground prefabricated structure, comprising:
a double-sided laminated shear wall comprising: the prefabricated wall comprises two prefabricated wall bodies 1 which are arranged in parallel at intervals relatively, wherein a steel bar net piece is arranged in each prefabricated wall body; the steel bar trusses 2 are arranged between the two prefabricated walls 1, and the steel bar trusses 2 are respectively connected with the steel bar meshes in the two prefabricated walls 1;
prefabricated board of falling T includes: the roof slab 4 and set up hidden roof beam 5 on the top surface of roof slab 4, pass through UHPC wet joint between the top of two-sided coincide shear force wall and the prefabricated board of falling T.
The wall board in the whole system of the invention adopts a double-sided superposed shear wall, the roof board adopts a prefabricated inverted T-shaped board (containing a hidden beam), the joints such as nodes and the like adopt UHPC post-pouring connection, and the whole pouring layer of the board surface is constructed to form a concrete industrialized structure with larger span and height.
According to the invention, the prefabricated double-sided superposed shear wall is combined with the inverted T-shaped plate, and the prefabricated assembly type construction technology of UHPC connection is adopted for combination, so that the problems of overlarge size and overweight of prefabricated components, difficulty in hoisting and incapability of considering both construction difficulty and construction efficiency in the existing large-span project are solved. Finally, a novel assembly type structural system of the inverted T-shaped plate combined double-sided superposed shear wall tool with good construction environment, low construction difficulty and high construction efficiency is formed.
As shown in fig. 3 and 4, in an embodiment of the prefabricated underground structure of the present invention, the bottom of the double-sided overlapped shear wall is connected to a bottom plate.
The wall and the plate are separately constructed, the whole wall plate structure is constructed, the double-sided superposed shear wall is prefabricated, a crane platform is erected, all prefabricated superposed wall plates are placed in the crane platform and are connected with the bottom plate in a traditional superposed shear wall node connection mode, the prefabricated superposed wall is fixed by temporary steel pipe diagonal braces on two sides, and embedded parts of the embedded steel pipe diagonal braces can be poured on the bottom plate in advance.
As shown in fig. 1, in an embodiment of the underground prefabricated structure, vertical steel bars pass through each prefabricated wall, an extension portion 3 of each vertical steel bar extends out of each prefabricated wall, and the extension portion is overlapped with the embedded vertical steel bars of the bottom plate.
In an embodiment of the prefabricated underground structure of the present invention, the length of the extension is 10 times the diameter of the reinforcement of the extension.
When the prefabricated wall body and the bottom plate are connected by adopting a UHPC post-cast section, the lap joint length of the vertical steel bars can be 10 times of the diameter of the steel bars.
In an embodiment of the prefabricated underground structure, the length of the extension part is 1.2 times of the preset anti-seismic anchoring length.
When the prefabricated wall body and the bottom plate are connected by adopting a common concrete post-pouring section, 1.2 times of anti-seismic anchoring length is reserved for binding and overlapping.
In an embodiment of the underground prefabricated structure, the extension parts and the embedded vertical steel bars of the bottom plate are in interval cross welding.
Herein, overhanging reinforcing bar and grade beam or lower floor's shear force wall pre-buried vertical reinforcement carry out interval cross welding, guarantee the overall stability of structure self-supporting.
In an embodiment of the underground prefabricated assembly type structure, the thickness of the steel bar protection layer of the prefabricated inverted T-shaped plate is 3.5 cm.
Here, the general protective steel bar layer of traditional prefabricated plate thickness undersize, the thickness of the protective steel bar layer of prefabricated board of falling T is 3.5cm (the thickness of the concrete between the reinforcing bar that covers the reinforcing bar outside and the concrete), and the waterproof and dampproofing requirement of underground space is satisfied in adaptation that can be better, improves structural quality.
According to another aspect of the present invention, there is also provided an installation method of an underground prefabricated structure, which uses the underground prefabricated structure according to any one of the above embodiments, the method including:
step S1, after the double-faced superposed shear wall is hoisted to the designated position on the built bottom plate 9, the double-faced superposed shear wall is fixed by the steel pipe inclined strut 7;
here, as shown in fig. 3, the double-sided superposed shear wall may be hoisted between the cast-in-place walls 6;
step S2, as shown in fig. 3, casting the wall and floor nodes using the UHPC wet joint 8;
step S3, as shown in fig. 4, pouring the concrete 10 in the cavity of the double-sided superposed shear wall;
step S4, hoisting the prefabricated inverted T-shaped plate to the top of the double-faced superposed shear wall;
step S5, as shown in FIG. 5, the top of the double-sided stacked shear wall is connected with the prefabricated inverted T-shaped plate through a UHPC wet joint 11;
and repeating the steps until all the double-sided superposed shear walls and the prefabricated inverted T-shaped plates in the single span area are arranged.
In summary, the invention has the following advantages:
1. the invention prefabricates beams, walls and plates in advance, and connects the structures of prefabricated wall plates and prefabricated floor plates (the inverted T-shaped plate comprises hidden beams) from bottom to top to form a set of brand new structure system.
2. All the wall plate structures are prefabricated by adopting double-sided superposed shear walls, so that the problem of overweight components caused by overhigh height and overlarge span of prefabricated components is solved, the weight of the components is greatly reduced, the transportation and hoisting construction are convenient, and meanwhile, the upper wall body and the lower wall body are connected into a whole, so that the joint surface is larger and the connection is more reliable;
3. the prefabricated wall plate of the prefabricated double-sided superposed wall is also used as a concrete pouring template, and the prefabricated inverted T-shaped plate is also used as a concrete pouring template of the floor system, so that the construction period and cost of a large number of bent frames and templates are saved, the construction speed is high, and the project is more efficient and economical.
4. All floor slabs adopt prefabricated inverted T-shaped plates, so that the problems of overweight components, insufficient load bearing capacity and the like when the plate span is too large are solved, the construction and hoisting efficiency is greatly improved, the structural performance is improved, and the potential safety hazard of the structure is reduced;
5. the roof of the underground sewage treatment plant is usually provided with thicker covering soil, equipment transportation vehicle passing roads and heavy equipment foundations, and needs to bear larger load, and the load can reach 40kn/m after the prefabricated inverted T-shaped plate is combined with the superposed layer for construction2,The bearing aspect can meet the requirement of top plate load;
6. the structural beam, the wall and the plate are integrally prefabricated, and joints of the joints are connected by UHPC post-pouring, so that a set of assembled structural system with stable quality, safety, convenient construction and high efficiency is finally formed.
7. The key nodes are poured by UHPC, and the UHPC material has good durability and can adapt to the corrosive environment of a sewage treatment plant, so that the key nodes are more durable and reliable.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. An underground prefabricated structure, comprising:
a double-sided laminated shear wall comprising: the prefabricated wall comprises two prefabricated walls which are arranged in parallel at intervals relatively, wherein a steel bar net piece is arranged in each prefabricated wall; the steel bar trusses are arranged between the two prefabricated walls and are respectively connected with the steel bar meshes in the two prefabricated walls;
prefabricated board of falling T includes: the double-sided superposed shear wall comprises a roof panel and a hidden beam arranged on the top surface of the roof panel, wherein the top of the double-sided superposed shear wall is connected with a prefabricated inverted T-shaped plate through a UHPC (ultra high performance concrete) wet joint.
2. The underground prefabricated structure of claim 1, wherein the bottom of the double-sided overlapped shear wall is connected to a bottom plate.
3. The underground prefabricated assembled structure of claim 2, wherein vertical steel bars pass through each prefabricated wall body, an extension part of each vertical steel bar extends out of each prefabricated wall body, and the extension part is lapped with the embedded vertical steel bars of the bottom plate.
4. The underground prefabricated structure of claim 2, wherein the length of the extension is 10 times the diameter of the reinforcing bars of the extension.
5. The underground prefabricated structure of claim 1, wherein the length of the extension is 1.2 times a preset seismic anchoring length.
6. The underground prefabricated structure of claim 1, wherein the extension part is cross-welded to the embedded vertical steel bars of the base plate at intervals.
7. The underground prefabricated structure of claim 1, wherein the thickness of the reinforcement protection layer of the prefabricated inverted-T panel is 3.5 cm.
8. A method of installing an underground prefabricated structure, wherein the underground prefabricated structure according to any one of claims 1 to 7 is adopted, and the method comprises the following steps:
step S1, after the double-faced superposed shear wall is hoisted to the designated position on the built bottom plate, the double-faced superposed shear wall is fixed by a steel pipe inclined strut;
step S2, using UHPC to cast the wall and floor nodes;
step S3, pouring concrete in the cavity of the double-sided superposed shear wall;
step S4, hoisting the prefabricated inverted T-shaped plate to the top of the double-faced superposed shear wall;
step S5, the top of the double-faced superposed shear wall is connected with the prefabricated inverted T-shaped plate through a UHPC wet joint;
and repeating the steps until all the double-sided superposed shear walls and the prefabricated inverted T-shaped plates in the single span area are arranged.
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| CN202110549376.8A CN113700034A (en) | 2021-05-20 | 2021-05-20 | Underground prefabricated assembly type structure and installation method thereof |
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| CN202110549376.8A CN113700034A (en) | 2021-05-20 | 2021-05-20 | Underground prefabricated assembly type structure and installation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000265458A (en) * | 1999-03-19 | 2000-09-26 | Penta Ocean Constr Co Ltd | Floor slab connecting structure for underground structure with precast pile underground wall |
| CN206956949U (en) * | 2017-07-24 | 2018-02-02 | 远大住宅工业（上海）有限公司 | Overlap wall and intermediate layer laminated floor slab connecting node |
| CN212224168U (en) * | 2020-04-17 | 2020-12-25 | 江苏中南建筑产业集团有限责任公司 | Double-sided superposed flow guide wall |
| CN112523339A (en) * | 2020-11-04 | 2021-03-19 | 上海建工二建集团有限公司 | Assembly type structure system and construction method thereof |
-
2021
- 2021-05-20 CN CN202110549376.8A patent/CN113700034A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000265458A (en) * | 1999-03-19 | 2000-09-26 | Penta Ocean Constr Co Ltd | Floor slab connecting structure for underground structure with precast pile underground wall |
| CN206956949U (en) * | 2017-07-24 | 2018-02-02 | 远大住宅工业（上海）有限公司 | Overlap wall and intermediate layer laminated floor slab connecting node |
| CN212224168U (en) * | 2020-04-17 | 2020-12-25 | 江苏中南建筑产业集团有限责任公司 | Double-sided superposed flow guide wall |
| CN112523339A (en) * | 2020-11-04 | 2021-03-19 | 上海建工二建集团有限公司 | Assembly type structure system and construction method thereof |
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